body {
}
@media (min-width: 0px) {
    .HistoryMain {
   height: 60vh;
    background-image: url('../img/historymainMobpic.png');
    background-repeat: no-repeat;
    background-position: top center;
    background-size: contain;
}
    .EulerSays {
   height: 80vh;
    background-image: url('../img/EulerResumeMob.png');
    background-repeat: no-repeat;
    background-position: top center;
    background-size: contain;
}
}

@media (min-width:1000px) {
        .HistoryMain {
   height: 70vh;
    background-image: url('../img/historymainpic.png');
    background-repeat: no-repeat;
    background-position: top center;
    background-size: contain;
}
            .EulerSays {
   height: 70vh;
    background-image: url('../img/EulerResume.png');
    background-repeat: no-repeat;
    background-position: top center;
    background-size: contain;
}
}